Intermittently bonded optical fibre ribbon with unequal bond and gap lengths

An intermittently bonded optical fibre ribbon comprising:

• a plurality of optical fibres such that adjacent optical fibres of the plurality of optical fibres are bonded intermittently along a length by a plurality of bonded portions spaced apart by a plurality of un-bonded portions, wherein the plurality of bonded portions is defined by a bonded length Li and the plurality of un-bonded portions is defined by an un-bonded length, wherein at least one of the bonded length Li and the un-bonded length varies along a predefined length of the adjacent optical fibres of the plurality of optical fibres, wherein the predefined length in different groups of plurality of groups shifts with a specific distance in longitudinal direction of the intermittently bonded optical fibre ribbon.